The Philadelphia District Attorney’s Office said in court Monday that due to questions about the credibility of his arresting officer, the imprisoned rapper’s decade-old conviction on gun and drug charges should be vacated and he should be granted a new trial.

The admission, made by Assistant District Attorney Liam Riley during a status hearing in Mill’s case, marked the first time that prosecutors have said they agree with his lawyers that his original arrest was questionably secured. It could open the door for prosecutors to decline to press forward with a new trial — possibly freeing Mill from the legal trouble he’s had since 2008.

Still, Mill’s release from prison is not yet secured, nor has his case been officially tossed out.